As someone who likes to bake and doesn't own a car, I have schlepped a lot of cakes on a lot of trains. I've maneuvered pies over subway turnstiles and Tupperwares between strangers' elbows. What was unusual about this one lemon cake was that I wasn't carrying it—and that's where this experiment was born. »1/06/15 12:59pm 1/06/15 12:59pm